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(11) | EP 2 551 748 A3 |
(12) | EUROPEAN PATENT APPLICATION |
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(54) | Electronic device |
(57) An electronic device, comprising: an execution unit which executes a predetermined
function; a first control unit that has an input terminal and causes the execution
unit to execute the predetermined function; a power source unit that supplies power
at least to the first control unit; and a second control unit that has an output terminal
connected to the input terminal of the first control unit via a signal line, operates
to output a signal to the first control unit via the signal line, and causes the power
source unit to cut off power supply to the first control unit, and wherein the second
control unit keeps a potential of the signal line at a reference level lower than
or equal to a predetermined threshold while the second control unit causes the power
source unit to cut off power supply to the first control unit.
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